19949750

素因数分解:

$2^1\times 5^3\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 37627200

約数和(自身を除く): 17677450

約数列:

[1, 2, 5, 10, 25, 50, 125, 199, 250, 398, 401, 802, 995, 1990, 2005, 4010, 4975, 9950, 10025, 20050, 24875, 49750, 50125, 79799, 100250, 159598, 398995, 797990, 1994975, 3989950, 9974875, 19949750]

約数ペア:

[(1, 19949750), (2, 9974875), (5, 3989950), (10, 1994975), (25, 797990), (50, 398995), (125, 159598), (199, 100250), (250, 79799), (398, 50125), (401, 49750), (802, 24875), (995, 20050), (1990, 10025), (2005, 9950), (4010, 4975)]